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Author Topic:   Mercury 40hp trim/tilt knocking

MBW posted 11-18-2012 05:14 PM ET (US)
I recently noticed that there is a knocking noise coming from the trim tilt tube on my Mercury 40hp 2 stroke, especially when I trim the motor up. Fluid is fine. Any suggestions?
jimh posted 11-18-2012 11:33 PM ET (US)
Check the force need to cause the engine to tilt to be certain there is no binding. On a smaller motor like a 40-HP you could temporarily disconnect the tilt ram and try moving the motor by hand.
MBW posted 11-19-2012 08:28 PM ET (US)
Turns out it was the steering link arm that needed tightening!
A2J15Sport posted 11-21-2012 01:12 PM ET (US)
Glad you found it. I was going to suggest the "tilt tube" area. Most never grease that and they can get noisy. Great job!

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Author	Topic: Mercury 40hp trim/tilt knocking
MBW	posted 11-18-2012 05:14 PM ET (US) I recently noticed that there is a knocking noise coming from the trim tilt tube on my Mercury 40hp 2 stroke, especially when I trim the motor up. Fluid is fine. Any suggestions?
jimh	posted 11-18-2012 11:33 PM ET (US) Check the force need to cause the engine to tilt to be certain there is no binding. On a smaller motor like a 40-HP you could temporarily disconnect the tilt ram and try moving the motor by hand.
MBW	posted 11-19-2012 08:28 PM ET (US) Turns out it was the steering link arm that needed tightening!
A2J15Sport	posted 11-21-2012 01:12 PM ET (US) Glad you found it. I was going to suggest the "tilt tube" area. Most never grease that and they can get noisy. Great job!